Esp-01 Datasheet -

But trying to use an ESP-01 without consulting its datasheet is like trying to fly a drone in the dark. You might get it off the ground, but you’re going to crash.

The ESP-01 is the perfect tool for one specific job: Turning "dumb" serial devices into smart devices. esp-01 datasheet

It’s a finicky, low-pin-count, voltage-sensitive pain in the neck. But when you finally get that "Hello World" printed over Wi-Fi from a board the size of a postage stamp, you’ll understand why this little blue module became a legend. But trying to use an ESP-01 without consulting

| Mode | GPIO 0 | GPIO 2 | GPIO 15 (TXD) | | :--- | :--- | :--- | :--- | | | LOW | HIGH | LOW | | Flash Boot (Run Code) | HIGH | HIGH | LOW | It’s a finicky